BTS436L2G Equivalent & Substitute Parts

Part Overview

The BTS436L2G is a high-side N-channel power switch manufactured by Infineon Technologies, designed for general-purpose switching applications in the PROFET® series. This component operates as a 1:1 power switch/driver with an 8.8A maximum output current and integrated fault protection including current limiting, open load detection, over-temperature, and over-voltage protection.

The BTS436L2G is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

BTS436L2G

Infineon TechnologiesIn Stock: 18703BTS436L2G Datasheet

Current PartRFQ

VN920DB5TR-E

STMicroelectronicsIn Stock: 8448VN920DB5TR-E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BTS436L2G is determined by strict alignment of the following critical parameters:

• Output Configuration & Type: High-side N-channel switching topology
• Ratio - Input:Output: 1:1 configuration
• Switch Type: General purpose application
• Number of Outputs: Single output
• Interface: On/Off control
• Input Type: Non-inverting logic
• Fault Protection: Current limiting, open load detection, over-temperature, and over-voltage protection
• Operating Temperature Range: -40°C ~ 150°C (TJ)
• Mounting Type: Surface mount

The VN920DB5TR-E from STMicroelectronics satisfies all substitution criteria. Both components share identical output configuration, switching topology, control interface, and fault protection mechanisms. The substitute part maintains compatibility across all functional and electrical parameters required for direct replacement in high-side switching applications.

Parameter Comparison

Engineering Selection Recommendations

The VN920DB5TR-E is the qualified substitute for the obsolete BTS436L2G. Selection of this substitute is supported by the following factors:

Product Status: The BTS436L2G is obsolete, making the active-status VN920DB5TR-E the appropriate long-term solution for continued supply and production support.

Compliance & Certifications: The VN920DB5TR-E holds ROHS3 compliance, providing superior environmental and regulatory alignment compared to the non-compliant BTS436L2G. Both components maintain REACH Unaffected status and EAR99 ECCN classification.

Functional Equivalence: Both components provide identical switching topology, control interface, and fault protection architecture. The substitute maintains all critical electrical and mechanical parameters required for direct replacement in high-side N-channel switching applications.

Performance Enhancement: The VN920DB5TR-E delivers higher current capacity (30A versus 8.8A) and lower on-resistance (18mOhm maximum versus 35mOhm typical), providing improved thermal performance and efficiency margins in the target application.

Frequently Asked Questions (FAQ)

Q: Can the VN920DB5TR-E directly replace the BTS436L2G in existing designs?

A: Yes. Both components share identical output configuration (high-side N-channel), control interface (on/off non-inverting), and fault protection mechanisms (current limiting, open load detection, over-temperature, over-voltage). The substitute maintains functional and electrical compatibility for direct replacement.

Q: What are the package differences between these components?

A: The BTS436L2G uses TO-263-5 (D2PAK) packaging, while the VN920DB5TR-E uses P2PAK packaging. Both are surface-mount packages with 4 leads plus tab. PCB layout modifications may be required to accommodate the different package footprints.

Q: Are there voltage or current limitations when substituting?

A: The VN920DB5TR-E operates within a slightly narrower load voltage range (5.5V ~ 36V versus 4.75V ~ 41V). Applications operating below 5.5V require verification. The substitute's higher current rating (30A) and lower on-resistance provide performance headroom for applications within the BTS436L2G's 8.8A specification.

Q: What is the impact of the RoHS compliance difference?

A: The VN920DB5TR-E is ROHS3 compliant, while the BTS436L2G is non-compliant. For new designs or applications subject to RoHS regulations, the substitute provides regulatory alignment. Existing designs using the obsolete part may require compliance review during redesign cycles.

Q: How does moisture sensitivity affect component handling?

A: The BTS436L2G has MSL 1 (unlimited shelf life), while the VN920DB5TR-E has MSL 3 (168-hour floor life after moisture exposure). The substitute requires standard moisture control procedures during storage and assembly, consistent with industry practices for MSL 3 components.